The coastguard helicopter Rescue 116 may have hit rocks around Black Rock Island off the Mayo coast.

It's a week to the day since the flight came down with four crew on board - Captain Dara Fitzpatrick has since been laid to rest and the search for her three colleagues will continue today including Captain Mark Duffy from Blackrock in County Louth.

In a statement overnight, the Air Accident Investigation Unit says it's recovered tail wreckage around the island's lighthouse.

It says this has been logged and will be brought to the A-A-I-U wreckage facility in Gormanston, County Meath, for detailed examination.